Spark-arrester



P. F. LANDIS.

SPARK ARRESTER.

No. 332,260. Patented Dec. 15, 1885.

WITNESSES: lA/VE/VTOI? Mm' By mww I ATTORNEY N PETERS. PholwLithngmpIwr.Wammgwn. D. C.

i UNITED STATES PATENT OFFICE.

FRANK F. LANDIS, OF XVAYNESBOROUGH, PENNSYLVANIA.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 332,260, dated December15, 1885.

Application filed October 1 1885. ScriulNo.1'78,70-2. (ModeL) To allwhom it may concern.-

Beit known that I, FRANK F. LANDIS, a citizen of the United States,residing at Waynesborough, in the county of Franklin and State ofPennsylvania, have invented certain .new and useful Improvements inSpark- Arresters, of which the following is a specification, referencebeing had therein to the accompanying drawings.

My invention relates to spark-arresters located in the upper end of thesmoke-stacks of locomotives, portable-engine boilers, &c.; and theobjects of my improvement are to produce a device to arrest all sparksissuing from a smoke-stack without materially obstructing the current ofgases escaping from said stack. I attain these objects by theconstruction illustrated in accompanying drawings, in which- Figure lrepresentsa vertical central section of the upper end of a smokestackhaving a spark arrester constructed in accordance with my invention.Fig. 2isavertical section upon alarge scale of the upper end of thestack and its connections with the conical head thereof.

Similar letters refer to similar partsthroughout these views.

Above the upper end of the stack is suspended in an inverted position acone, A, made of fine netting, the area of which is about three timesthe area of the stack B. The upper edge of this cone is suspended fromthe inner edge of aconcavo-convex ring, 0, having on its outer edge apendent band, E, of fine netting screwed thereto, and said ring 0 issuspended from pivots c, entering the lower end of hangers J, secured tothe under side of the cap G of the stack. To improve the appearance ofthe chimney and conceal the fire-heated flue B, the latter is inclosedin a shell or jacket, 0, having perforations t near the top, and alsonear the bottom, (but the latter are not shown in the drawings,) topermit air to circulate in the space N between the flue B and itsjacket, and prevents the latter from getting hot enough to burn paintupon its surface. The upper end of the jacket 0 carriesthe largetruncated cone T, forming the outer flue of the spark-arrester, and toproduce a strong connection between the parts 0 and T a cast ring, S, ofbrass or other suit- I able metal is used, the lower end of which entersthe upper end of the jacket 0, and is riveted thereto, while the upperend of the ring receives the lower or small end of the truncated cone Tand is also riveted thereto. A bead is formed upon the surface of thering S to improve its appearance. The lower portion of this ring is notriveted to but simply fits around the flue B, so that the latter can belifted out when it becomes burned or rusted and it is desired to renewit. To the lower portion of the cone T is secured in its interior thelower end of a slightly-conical flue, D, by means of rivets passingthrough thimbles u, that retain the parts D and T concentric, but at asufficient distance apart for the passage of the largest sparks orunconsumed fuel back under the lower edge of the flue D, and into theinterior of said flue, an annular passage, m, being also kept betweenthe lower edge of the flue D and the stack B, the upward current ofgases in said stack producing a suction in the passagem, and in thebottom ofthe chamber F, formed by the cones D and T. The area of theannular passage between the upper end of the conical flue D and thesparkdeflecting concave ring 0, or between said flue D and the cone A orthe netting-band E, is equal to the area of the stack B, so that even ifall the meshes of the parts A and E, should become clogged the onlycheck to the draft would be smoke would be compelled to take.

To promptly remedy any clogging of the netting, the cap G of the stackis hinged at g to lugs projecting laterally from the top of the cone T,or from a band, t encircling said top, and said cap can be turned over,as shown by dotted lines, by the attendant pulling on the hand-rod H,which is pivoted to the outer end of an arm, I, secured upon the top G,and when in this position the netting can be easily brushed off, as thespark-deflecting ring 0, and the cone A carried thereby, is pivoted tothe cap, the point of said cone will become tilted, and follow thedotted line is in or out of the upper end of the flue D. However, itwill he rarely necessary to clean the netting if the cap and itsappendages are turned off to one side when the fire is first started, asit is then that the netting will become clogged while the on account ofthe slightly-indirect course the smoke is cold and contains muchmoisture. After the cone Ais returned in position within the flue D, itis kept from oscillating or steadied by means of a lug, 0 secured withinthe concavity of the ring 0, its shoulder abutting against the edge ofthe flue D, and also by means of a projection, 9 hanging from the underside of the cap G, and resting upon the ring 0.

The netting at the small end of the cone A is clamped between a smallcone, a, placed internally, and a hollow cone, a", placed externally. Arod, 1?, passes through both cones a and a. This rod has a collar, p,that rests upon the broad end of the cone a, while a nut on the lowerend of the rod bears upon the small end of the hollow cone a".

To retain the netting under tension, the upper end of the rod P passesthrough the hub of the transverse bar 0 and is provided with a nut, R,above and under said hub, so that by slackening the upper nut andrunning the lower one tightly under said hub the collar p on the lowerend of the rod P forces the clampingcones a and a down and stiffen thenetting.

Having now fully described my invention,

' I claim 1. The combination of the stack B, the outer cone, T, theinner cone of netting, and the intermediate flue, D, independent fromthe flue B, with the deflecting-ring 0, located above the edge of theflueD, and the pendentnettingband E of said ring, substantially as andfor the purpose described.

2. The combination of the cap G, having hangers J, with thedeflecting-ring l, pivoted to the latter, substantially as and for thepurpose described.

8. The combinationof the cone T, the cap G, hinged to the latter, thedeflecting-ring pivotally' supported from the cap, and a cone of nettingsecured'to the deflecting-ring, substantially as and for the purposedescribed.

4. The combination of the deflecting-ring, its cone netting andtransverse bar 0 with the internal cone, a, external cone, a and thecentral rod the whole length of the cone netting, substantially as andfor the purpose described.

5. The combination of the flue-jacket O, the conical inner flue, D, theouter cone, T, and connecting-ring S, with the removable stackflue B,substantially as and for the purpose described.

6. The combination of the stack 13, the outer cone, T, and the innercone of netting having a concavo-convex deflecting-ring secured to itsupperedge, with the flue D, havinga smokepassage above its upper edgeand a sparkpassage under its lower edge, substantially as described.

7. The combination of the conical flue D,1

the internal cone netting, the deflecting-ring, and steadying-lug c,with the cap G, hinged to one side of the outer cone of the smoke stack,substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK F. LANDIS.

NVit-nesses:

GEO. H. RUssELL, ALF. N. RUssELL.

